A..........duh just read the sides of the graph
The positive integers would be 8 and 9
because 8*9= 72
<span>A = 2ab + 2ac + 2bc
A = 2b(a + c) + 2ac
2b(a + c) = A - 2ac
b = (A - 2ac) / [2(a + c)]</span>
3rd answer always solve parenthesis first use PEMDAS